Preyswapfell

Chara is incredibly shy and fragile due to her experiences above and below the underground now she's at the edge of breaking down but thanks to temmie keeping her positive and protecting her from harm she tries to deal with what's happened in a positive way saying “we can fix this”  but chara knows she's lying to herself but now she lives with the hunter and tracker which made her life a bit better but still doesn’t help her crippling depression

Monsters
Temmie tries to protect frisk from harm but she can’t  control herself sometimes so she will run away,happstablook stalks the ruins singing his song to his “audience”,papyrus and toby have become incredibly hostile towards everyone including his brother,sans has lost his sanity and now he’s in constant fear of what will happen to him,undyne's body has become mechanised with her old friends body she carries around his hat to remember him, alphys is a complete monster hunting anything she sees only a few flowey's form bushes and shrubs to hunt the other monsters have either went extinct or went into hiding